The most common cause of low sperm count in males is _____
a. varicocele
b. undescended testicles
c. testicular failure
d. semen disorders
e. obstructions
a
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Changes in gene action that are often associated with cancer cells are known as ________ changes.
Fill in the blank(s) with the appropriate word(s).
We can calculate whether a reaction is spontaneous by calculating the change in free energy and
accounting for entropy. Your paycheck always lists your gross pay, net (take home) pay, and tax withholdings. Which of the following best correlates your paycheck to the changes in free energy?
a. gross = net ? tax; free energy = total energy ? entropy b. net salary = gross salary ? tax; free energy = total energy ? entropy c. tax = gross ? net salary; entropy = free energy ? total energy d. gross salary = tax ? net salary; total energy = entropy ? free energy e. net salary = gross salary + tax; total energy = free energy + entropy
Aside from the traditional hypothesis that life on Earth developed via organic compounds produced in
a reducing atmosphere, which of the following alternative hypotheses is most likely?
a. Life could have arisen from the organic compounds formed around hydrothermal vents far below the ocean floor. b. Life could have developed on another planet and was then delivered by meteorites. c. The organic compounds necessary for life were delivered to Earth by meteorites. d. Life on Earth may have arisen inside land-based volcanoes. e. The organic compounds necessary for life could only have been produced in an oxidizing atmosphere
The mammalian lineages include
A. monotremes. B. marsupials. C. placental mammals. D. All of the answer choices are correct. E. No answer choice is correct.